sensorial-materials-and-the-childs-developmental-learning-san-francisco-panama-pacific-international-exposition-lecture-16-10-september-1915-tibas4ai Post date December 14, 2021 Tags Maria Montessori - Speeches, addresses, etc., Panama-Pacific International Exposition (1915, San Francisco, California) ← social-conditions-and-the-development-of-the-child-san-francisco-panama-pacific-international-exposition-lecture-8-19-august-1915-t6awc96w → sensorial-learning-as-developmental-learning-san-francisco-panama-pacific-international-exposition-lecture-13-4-september-1915-cxchn44j